Until the end of exam, you should be in the frame of your auxiliary camera. Examinee's head, hands, desk and papers and computer should be seen. This can be achieved by setting examinee's smartphone at a distance from the examinee's working place.
Avoid auxiliary camera position, when it covers examinee partially and does not cover examinee's display and area around at all.
Prohibited to put auxiliary camera aside and\or direct it to the wall, cealing or desk.
Prohibited to dosconnect auxiliary camera intentionally until the end of exam.
There is a couple of samples of good auxiliary camera position:
There is a couple of samples of bad auxiliary camera position: